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Abhay Yadav's avatar
Abhay Yadav
Explorer | Level 4
6 years ago

Bad JSON: expected object value. exception while uplaoding a file using dropbox Java SDK

Hi all,   I am trying to upload a file using dropbox Java SDK (version 3.1.5). I amgetting file from a ajax form and then trying to upload it but getting the below exception when calling uploadAndF...
API
Greg-DB's avatar
Greg-DB
Icon for Dropbox Community Moderator rankDropbox Community Moderator
6 years ago

Thanks for following up. That actually sounds like a bug in the SDK then. The SDK should automatically convert the 'invalid_access_token' error response to a proper exception. I'll look into it and ask the team to fix that up.

FilipRachunek's avatar
FilipRachunek
Explorer | Level 4
5 years ago

Hello,

 

I have the same problem, using Dropbox Java SDK 3.1.5. I suspect the issue could be related to new short-lived access tokens and scoped apps, as I don't see this error with "no expiration" token and "full Dropbox" permission type (created in the past).

 

So, my first idea was that some scoped permissions were missing, as all read operations work fine, and the problem occurs only with "uploadAndFinish(inputStream)" method. However, I checked the permissions and I didn't see anything wrong there - there are checked checkboxes at files.metadata.write, files.metadata.read, files.content.write, files.content.read.

 

Can you help, please? I am out of ideas.

 

Filip

  • Greg-DB's avatar
    Greg-DB
    Icon for Dropbox Community Moderator rankDropbox Community Moderator
    5 years ago

    FilipRachunek This is a bug in the Java SDK. This is still open with engineering, but I don't have an update on it yet. I'll follow up here once I do.

    • FilipRachunek's avatar
      FilipRachunek
      Explorer | Level 4
      5 years ago

      @Greg-DB Thanks for your prompt response. I'll wait for the SDK update.

       

      Filip

       

      • FilipRachunek's avatar
        FilipRachunek
        Explorer | Level 4
        5 years ago

        Hello,

         

        The error is still there, even in version 4.0.0 of the Java SDK.

        com.dropbox.core.BadResponseException: Bad JSON: expected object value.
 at [Source: (String)""; line: 1, column: 1]
	at com.dropbox.core.DbxRequestUtil.unexpectedStatus(DbxRequestUtil.java:347) ~[dropbox-core-sdk-4.0.0.jar:na]
	at com.dropbox.core.DbxRequestUtil.unexpectedStatus(DbxRequestUtil.java:324) ~[dropbox-core-sdk-4.0.0.jar:na]
	at com.dropbox.core.DbxUploader.finish(DbxUploader.java:268) ~[dropbox-core-sdk-4.0.0.jar:na]
	at com.dropbox.core.DbxUploader.uploadAndFinish(DbxUploader.java:126) ~[dropbox-core-sdk-4.0.0.jar:na]
	at com.dropbox.core.DbxUploader.uploadAndFinish(DbxUploader.java:96) ~[dropbox-core-sdk-4.0.0.jar:na]
	at com.dropbox.core.v2.DbxUploadStyleBuilder.uploadAndFinish(DbxUploadStyleBuilder.java:92) ~[dropbox-core-sdk-4.0.0.jar:na]

         Any chance to fix it soon? I understand that long-lived access tokens will stop working by the end of September 2021, so we'll have to switch to short-lived. However, it's not possible as long as the SDK throws this exception.

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